CanadianMovie writer, director, and producer(Terminator, Titanic, Avatar, The Abyss) 2012, first person to solo dive to the Challenger Deep,the deepest part of the Mariana TrenchDiscovered new species of sea cucumber, squid worm, and giant single-celled amoeba

American1960, one of two listed here who descended to the bottom of the Mariana Trench, aboard the bathyscaphe TriesteNamed one of the world's great explorers by Life magazine2010, received National Geographic Society's greatest honor, the Hubbard Medal

SwedishA founder of oceanographyDeveloped the eponymous current meter

Swiss1960, one of two listed here who descended to the bottom of the Mariana Trench, aboard the bathyscaphe Trieste1969, leader of the Franklin Mission, in which a 6-man crew remained submerged for 4+ weeks, performing a bottom survey along the drift track over the Continental Shelf

American1958, commander of the U.S.Navy submarine Nautilus during its voyage under the Arctic Ocean, to the North Pole1965 to 1973, Congressman from Tennessee

Swiss1930's, made several record high flights in balloonsDesigning balloons for high altitude led him to seek to build a deep sea submersible1937-1948, Invented the bathyscaphe, a deep-diving vesselSon used his bathyscaphe to reach the Mariana Trench

American1929, established Momsuch Station in Bermuda for tropical ocean research1934, descended over 1/2 mile in a bathysphereProlific scientific writer, both popular and academic